noun which may take the genitive case particle 'no'
unarmed; without weapons
Describes a person who is not carrying any weapons, often in contexts where being armed is expected or relevant. Used attributively with の.
He faced the enemy unarmed.
An unarmed police officer is rare.
Compound of 丸 (まる, 'round' or 'whole') and 腰 (こし, 'waist'), originally referring to not wearing a sword at the waist, thus 'completely unarmed'.